GCSE Maths - What Does Directly Proportional Mean? #89

The video explains direct proportionality, using hours worked and amount earned as an example. It describes how directly proportional variables increase or decrease at the same rate, and how this relationship is represented on a graph as a straight line passing through the origin. The video also demonstrates how to use such graphs to calculate earnings for different hours worked. Finally, it summarizes the concept, emphasizing that directly proportional variables maintain a consistent ratio.

What does it mean for two variables to be directly proportional?

Explain how the concept of direct proportionality applies to hourly wages.

How can you demonstrate a direct proportional relationship on a graph?

What are the two key characteristics of a graph representing directly proportional variables?

If you worked 3.5 hours and earned 42 pounds, how much would you earn for 7 hours?